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Mazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWD

We’ve been dreaming about the RX-9 ever since Mazda revealed the RX-Vision Concept in 2015 at the Tokyo Auto Show. The Japanese automaker has also previewed the SkyActiv-R engine with this one-off work of automotive art, but then again, neither the car nor the rotary powerplant has made it to production. Yet…
Mazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWD 54 photos
Mazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda Patents Range-Extender Rotary and V-Type Powertrains With Three-Motor AWDMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda RX-Vision ConceptMazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda Door Support Structure of Automotive Vehicle (rumored RX-9 rotary sports car)Mazda patents rotary engine for plug-in hybrid range extenderMazda patents rotary engine for plug-in hybrid range extenderMazda patents rotary engine for plug-in hybrid range extenderMazda patents rotary engine for plug-in hybrid range extenderSkyActiv-R rotary engine patent imageSkyActiv-R rotary engine patent imageSkyActiv-R rotary engine patent imageSkyActiv-R rotary engine patent imageSkyActiv-R rotary engine patent imageSkyActiv-R rotary engine patent imageSkyActiv-R rotary engine patent image
Last time we’ve heard anything remotely official about the successor of the RX-8, chief executive officer Akira Marumoto said that the rotary sports car is a dream of everyone at Mazda.” Prior to that comment, there were statements according to which RX-9 will definitely happen and the RX-9 won’t. Frankly, it’s a slow burn.

On the upside, Mazda develops the SkyActiv-R as we speak in the guise of a range-extender rotary for a future version of the MX-30 crossover. Think of this powertrain as the BMW i3 REx with a two-cylinder motorcycle mill.

However, the SkyActiv-R could be developed into something else based on a patent filing. Submitted in October 2018 and published in April 2020, JP 2020-55416 reveals two in-wheel electric motors at the front axle, indirectly coupled to the rotary engine, and a third electric motor that drives the rear axle. Make no mistake about it; this layout is seriously complex.

The internal combustion engine is also depicted as a V-type engine with eight cylinders, though it’s wishful thinking to hope that Mazda will ever go down the eight-cylinder route. On the other hand, it’s possible for the SkyActiv-G and SkyActiv-D family of inline-six powerplants to feature the e-AWD setup.

If the engine acts solely as a range extender, then Mazda is following in the footsteps of the BMW i3 REx as well as the Chevrolet Volt. As opposed to those two, the patent features a 3.5-kWh battery and a 48-volt electrical system. That’s a lot less than the Chevy and Bimmer, but then again, the MX-30 also features a small battery compared to its competitors.

The MX-30 makes do with 35.5 kWh and approximately 130 miles of range because of something called life-cycle assessment of total CO2 emissions. According to Mazda official Christian Schultze, a 95-kWh pack would generate higher CO2 emissions from the beginning of the vehicle’s life cycle.

On that note, the big question is still unanswered. Will the RX-9 ever happen, and if it will, does Mazda plan to gift it with this intricate e-AWD layout?

 
 
 
 
 

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